Ferromagnetic coupling between an alkoxo-bridged dinickel(II) pair in a mixed-spin tetranuclear nickel(II) complex

A nickel(II) complex with 2-hydroxy-N,N′-bis(1-methyl-3-hydroxy-3-phenyl-2-propen-1-ylidene)-1,3-propanediamine (H3L),[Ni4(L)2(CH3O)2(CH3OH)2], was synthesized and structurally characterized. The X-ray crystal structure shows that the compound has a tetranuclear structure with a mixed-spin state consisting of octahedral NO5 and planar NO3 coordination environments, which is formed by alkoxo-bridges. Magnetic susceptibility data show ferromagnetic behavior.